物理化学学报 >> 2016, Vol. 32 >> Issue (3): 605-610.doi: 10.3866/PKU.WHXB201512241

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四丁基季鏻羧酸盐离子液体的物理化学性质与CO2溶解度

陈凤凤,董艳,桑晓燕,周言*(),陶端健*()   

  • 收稿日期:2015-09-11 发布日期:2016-03-04
  • 通讯作者: 周言,陶端健 E-mail:anitachow@jxnu.edu.cn;djtao@jxnu.edu.cn
  • 基金资助:
    国家自然科学基金(21206063, 21566011, 31570560);江西省自然科学基金(20151BAB213016);江西师范大学青年英才计划项目资助

Physicochemical Properties and CO2 Solubility of Tetrabutylphosphonium Carboxylate Ionic Liquids

Feng-Feng CHEN,Yan DONG,Xiao-Yan SANG,Yan ZHOU*(),Duan-Jian TAO*()   

  • Received:2015-09-11 Published:2016-03-04
  • Contact: Yan ZHOU,Duan-Jian TAO E-mail:anitachow@jxnu.edu.cn;djtao@jxnu.edu.cn
  • Supported by:
    the National Natural Science Foundations of China(21206063, 21566011, 31570560);Natural Science Foundations of Jiangxi Provincial Department of Science and Technology, China(20151BAB213016);Sponsored Program for Cultivating Youths of Outstanding Ability in Jiangxi Normal University, China

摘要:

在298.15-348.15 K温度范围内,测定了四种四丁基季鏻羧酸盐离子液体([P4444][CA])的密度、粘度、折射率、电导率等物理化学性质,得出了其随温度的变化关系,并获得了不同温度下该类离子液体的热膨胀系数。其次,在1个大气压和313.15 K温度下,测定了CO2在该类离子液体中的溶解度,结果表明,四丁基季鏻丁酸盐吸收CO2的性能最好,吸收量为0.4 mol·mol-1,平衡时间小于5 min。

关键词: 离子液体, 四丁基季鏻羧酸盐, 物理化学性质, CO2吸收

Abstract:

Four tetrabutylphosphonium carboxylate ionic liquids ([P4444][CA]) were prepared, and their densities, viscosities, refractive indices, and conductivities were measured and correlated with thermodynamic and empirical equations in the temperature range of 298.15-348.15 K. The influence of temperature on these four properties of [P4444][CA] was discussed, and their thermal expansion coefficient values were calculated. The CO2 absorption capacity of [P4444][CA] was studied at 313.15 K and 100 kPa. The results indicated that [P4444][Buty] had the highest CO2 capture capacity among these ionic liquids, with an absorption capacity of 0.4 mol·mol-1 and balance time of less than 5 min.

Key words: Ionic liquid, Tetrabutylphosphonium carboxylate, Physicochemical property, CO2 capture

MSC2000: 

  • O642